> For the complete documentation index, see [llms.txt](https://help.simnetonline.com/students/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.simnetonline.com/students/important-links.md).

# Important Links

- [Getting Support](https://help.simnetonline.com/students/important-links/mh-support.md): Contacting McGraw Hill for SIMnet help and a guide for how to do it.
- [Coded Messages](https://help.simnetonline.com/students/important-links/mh-support/upload-messages.md): Coded messages for Project and Resources Assignments and what they mean.
- [Support Guidelines](https://help.simnetonline.com/students/important-links/mh-support/support-guidelines.md): Guidelines on how to best request SIMnet help from McGraw Hill
- [Creating a .har file](https://help.simnetonline.com/students/important-links/mh-support/har-file.md): How to create a .har file to troubleshoot difficult to diagnose issues
- [Performing a Traceroute](https://help.simnetonline.com/students/important-links/mh-support/performing-a-traceroute.md): Capturing a traceroute to troubleshoot Internet connectivity issues.
- [Assignment Link Error Message](https://help.simnetonline.com/students/important-links/mh-support/assignment-link-error-message.md): What to do if you receive an error message when accessing an assignment from your LMS.


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